Coherent surface acoustic wave–spin wave interactions detected by micro-focused Brillouin light scattering spectroscopy
- We investigated the interaction of surface acoustic waves and spin waves with spatial resolution by micro-focused Brillouin light scattering spectroscopy in a Co40Fe40B20(10 nm) ferromagnetic layer on a LiNbO3-piezoelectric substrate. We experimentally demonstrate that the magnetoelastic excitation of magnons by phonons is coherent by studying the interference of light scattered off generated magnons and annihilated phonons. We find a pronounced spatial dependence of the phonon annihilation and magnon excitation, which we map as a function of the magnetic field. The coupling efficiency of the surface acoustic waves (SAWs) and the spin waves is characterized by a magnetic field-dependent decay of the SAWs amplitude.
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| Author: | Yannik Kunz, Matthias KüßGND, Michael Schneider, Moritz Geilen, Philipp Pirro, Manfred AlbrechtORCiDGND, Mathias Weiler |
|---|---|
| URN: | urn:nbn:de:bvb:384-opus4-1130539 |
| Frontdoor URL | https://opus.bibliothek.uni-augsburg.de/opus4/113053 |
| ISSN: | 0003-6951OPAC |
| ISSN: | 1077-3118OPAC |
| Parent Title (English): | Applied Physics Letters |
| Publisher: | AIP Publishing |
| Type: | Article |
| Language: | English |
| Year of first Publication: | 2024 |
| Publishing Institution: | Universität Augsburg |
| Release Date: | 2024/05/21 |
| Volume: | 124 |
| Issue: | 15 |
| First Page: | 152403 |
| DOI: | https://doi.org/10.1063/5.0189324 |
| Institutes: | Mathematisch-Naturwissenschaftlich-Technische Fakultät |
| Mathematisch-Naturwissenschaftlich-Technische Fakultät / Institut für Physik | |
| Mathematisch-Naturwissenschaftlich-Technische Fakultät / Institut für Physik / Lehrstuhl für Experimentalphysik IV | |
| Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
| Licence (German): |  CC-BY 4.0: Creative Commons: Namensnennung (mit Print on Demand) |
